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You searched for: subject:"curvature"
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[texts]Practical observations on the prevention, causes and treatment of curvature of the spine, with engravings and woodcuts illustrative of the cases - Hare, Samuel
14
Keywords: Spine -- Curvature
Downloads: 220
[texts]Lateral curvature of the spine and round shoulders - Lovett, Robert Williamson, 1859-1924
14
Keywords: Spine -- Curvature
Downloads: 542
[audio]IUMA: Curvature of the Spine
my name is mike rogers. i was born april 18, 1983. i am artist, pretty much that describes what i am. most of my interests are related to creation of ideas in one respect or another. the primary reason for setting up this website it to host the music i make, but also as a forum for my creativity. though music is my main focus right now, don't be surprised if other art forms and literature start creeping up after a while...
Keywords: Curvature of the Spine
Downloads: 18
[texts]Sur la détermination géométrique de quelques infiniment petits - Sparre, Magnus, comte de
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Keywords: Curves of double curvature
Downloads: 175
[texts]Covering a closed curve with a given total curvature - Ghandehari, Mostafa.
Technical report for period April 1990-October 1990.
Keywords: CURVES(GEOMETRY); CURVATURE
Downloads: 63
[texts]Etude de quelques surfaces algébriques engendrées par des courbes du second et du troisième ordre - Stuyvaert, Modeste
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Keywords: Curvature; Surfaces, Algebraic
Downloads: 128
[texts]Théorie nouvelle géometrique et mécanique des lignes à double courbure - Serret, Paul Joseph, 1827-1898
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Keywords: Curves of double curvature
Downloads: 229
[texts]The curvature of plane elastic curves - Brunnett, Guido.
Technical rpeort for period January 1993 - March 1993.
Keywords: CURVATURE; ELASTIC PROPERTIES
Downloads: 26
[texts]A brief account of the historical development of pseudospherical surfaces from 1827 to 1887 - Coddington, Emily
Thesis (Ph.D.)--Columbia University
Keywords: Surfaces of constant curvature
Downloads: 175
[texts]A brief account of the historical development of pseudospherical surfaces from 1827 to 1887.. - Coddington, Emily
Book digitized by Google from the library of the University of Michigan and uploaded to the Internet Archive by user tpb.
Keywords: Surfaces of constant curvature
Downloads: 189
[texts]Skew frequency curves in biology and statistics. 2nd paper - Kapteyn, J. C. (Jacobus Cornelius), 1851-1922
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Keywords: Curves of double curvature
Downloads: 378
[texts]The shape of idealized grain boundaries (Volume 78A) - Coriell, S.R.
Journal of Research of the National Bureau of Standards
Keywords: Boundary shape; curvature; grain boundary
Downloads: 28
[texts]Cosmology- a zero density model of the universe - Sherman, W. L
No Abstract Available
Keywords: ASTRONOMICAL MODELS; COSMOLOGY; CURVATURE; UNIVERSE
Downloads: 83
[texts]Allgemeine theorie der raumkurven und flächen - Kommerell, V. (Victor), 1866-
Book digitized by Google from the library of Harvard University and uploaded to the Internet Archive by user tpb.
Keywords: Surfaces; Curves of double curvature
Downloads: 176
[texts]A 5.8ppm/°C Bandgap Reference with a Preregulator - Feiyan Mu,Mingying Du, Jie Lin
To reduce the temperature draft of accurate analog to digital converters, a voltage reference introduced in 0.5μm BiCMOS technology in this paper. With curvature compensation, a low offset operational amplifier and a temperaturecompensated preregulator, the temperature coefficient of the reference is reduced to 5.8ppm/°C and the operating temperature range is extended to between â55°C and +125°C...
Keywords: bandgap reference; curvature compensation; low
Downloads: 93
[texts]Allgemeine Theorie der Raumkurven und Flächen (Volume 1) - Kommerell, Viktor, 1866-
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Keywords: Curves of double curvature; Surfaces
Downloads: 221
[texts]Theorie der Oberflächen zweiter Ordnung und der Raumkurven dritter Ordnung als Erzeugnisse projektivischer Gebilde. Nach Jacob Steiner's Prinzipien auf synthetischem Wege - Schröter, Heinrich, 1829-1892
Book digitized by Google from the library of the University of Michigan and uploaded to the Internet Archive by user tpb.
Keywords: Quadrics; Curves, Cubic; Curves of double curvature
Downloads: 113
[texts]Theorie der Oberflächen zweiter Ordnung und der Raumkurven dritter Ordnung als Erzeugnisse projektivischer Gebilde. Nach Jacob Steiner's Prinzipien auf synthetischem Wege - Schröter, Heinrich, 1829-1892
Book digitized by Google from the library of Harvard University and uploaded to the Internet Archive by user tpb.
Keywords: Quadrics; Curves, Cubic; Curves of double curvature
Downloads: 104
[texts]Theorie der Oberflächen zweiter Ordnung und der Raumkurven dritter Ordnung als Erzeugnisse projektivischer Gebilde. Nach Jacob Steiner's Prinzipien auf synthetischem Wege - Schröter, Heinrich, 1829-1892
Book digitized by Google from the library of Oxford University and uploaded to the Internet Archive by user tpb.
Keywords: Quadrics; Curves, Cubic; Curves of double curvature
Downloads: 177
[texts]Fourier transform in Riemann space - Mark L. Gurari
Abstract: By redefinition of inner product and orthogonality concepts it has been gotten a formula for Fourier transform in Riemann space. It is proved, that n-dimensional Riemann space can be considered as two Euclidian n-spaces with one scalar limitation. As a local measure of the Riemann space curvature can be used cosine of angle between these two systems.
Keywords: Fourier transform; Riemann space; orthogonality; curvature
Downloads: 86
[texts]Über die kugeln, welche eine cubische raumcurve mehrfach oder mehrpunktig berühren .. - Timerding, Heinrich Carl Franz Emil, 1873- [from old catalog]
Book digitized by Google from the library of Harvard University and uploaded to the Internet Archive by user tpb.
Keywords: Curves of double curvature. [from old catalog]
Downloads: 104
[texts]Modeling Curvature Damage Surface for Damage Detection in Cantilever Beam
A damage detection method is presented for the identification and quantification of damage. The proposed method uses finite element method to extract modal parameters of cracked and intact cantilever beam. The damage is simulated by fracture mechanics concept by introducing cracked elements at different locations with predetermined magnitude of depth. The curvature response function, function of crack location and size, are approximated by means of polynomial surface fitting...
Keywords: Crack beam modeling; Response Curvature damage surface; Wavelet Transform; Response Curvature error damage surface
Downloads: 125
[texts]A Validated All-Pressure Fluid Drop Model and Lewis Number Effects for a Binary Mixture - Harstad, K.
The differences between subcritical liquid drop and supercritical fluid drop behavior are discussed. Under subcritical, evaporative high emission rate conditions, a film layer is present in the inner part of the drop surface which contributes to the unique determination of the boundary conditions; it is this film layer which contributes to the solution's convective-diffusive character. In contrast, under supercritical condition as the boundary conditions contain a degree of arbitrariness due to ...
Keywords: BORON NITRIDES; STACKS; CURVATURE; DEFLECTION; EXPERIMENTATION; CYLINDRICAL BODIES; TEMPERATURE DEPENDENCE
Downloads: 97
[texts]Compton Scattering by Static and Moving Media - Psaltis, Dimitrios
Compton scattering of photons by nonrelativistic particles is thought to play an important role in forming the radiation spectrum of many astrophysical systems. Here we derive the time-dependent photon kinetic equation that describes spontaneous and induced Compton scattering, as well as absorption and emission by static and moving media, the corresponding radiative transfer equation, and their zeroth and first angular moments, both in the system frame and in the frame comoving with the medium...
Keywords: FULLERENES; CARBON; MAGNETIC PROPERTIES; NUCLEATION; REACTIVITY; CURVATURE; CONJUGATION
Downloads: 81
[texts]SOME CONSTRUCTION PRINCIPLES FOR REMOTE CONTROL IMITATIVE MANIPULATORS - BOR-RAMENSKIY, A. Y.
SOME BASIC MECHANICAL REQUIREMENTS FOR THE CONSTRUCTION OF MANIPULATORS DESIGNED TO PERFORM A WIDE RANGE OF COMPLEX TASKS AT A DISTANCE FROM THE OPERATOR ARE REVIEWED. THE KINEMATICS AND DYNAMICS OF THE HUMAN ARM AND HAND ARE OUTLINED, AND RELEVANT CONSTRUCTION PRINCIPLES ARE ABSTRACTED. THESE PRINCIPLES ARE THEN, RATHER EFFECTIVELY, APPLIED TO IMITATIVE REMOTE CONTROL MANIPULATORS WITH BOTH ACTION AND PASSIVE FEEDBACK.
Keywords: CURVATURE; DIFFUSERS; SLOTS; AXISYMMETRIC FLOW; SUBSONIC FLOW; SUCTION
Downloads: 128
[texts]Dioptrice, by Johannes Kepler, AKA, Ioannis Kepleri - Johannes Kepler
This is a book on telescope refraction written in Latin. The full title of the book is "Dioptrice seu demonstratio eorum quae visui & visibilibus propter Conspicilla ita pridem inventa accidunt" a loose translation of the title would be "Refraction: Or, Demonstration their which view & visible for keep in sight so long found frequency." This was published in 1611.
Keywords: Astronomy; Telescope; Optics; Refraction; Science; Lens; Curvature; Light
Downloads: 249
[texts]Anwendung der Differential- und Integralrechnung auf die allgemeine Theorie der Flächen und der Linien doppelter Krümmung. 2. Aufl. Bearbeitet von L. Natani - Joachimsthal, F
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Keywords: Curves of double curvature; Differential equations; Integral equations
Downloads: 261
[texts]On loci pertaining to the osculating circles and spheres of certain space curves - Cullum, William Henry
Thesis (M.A.) --University of Illinois, 1916
Keywords: Geometry, Differential; Surfaces of constant curvature; Curves; Surfaces; Theses
Downloads: 12
[texts]Seminar in Geometry- Chapter 8- Gauss Map I - Emma Carberry
We�ve already discussed the curvature of a curve. We�d like to come up with an analogous concept for the �curvature� of a regular parametrized surface Sparametrized by x: U _ Rn. This can�t be just a number � we need at thevery least to talk about the �curvature of S at p in the direction v _ Tp(S)�
Keywords: Maths; Linear Algebra and Geometry; Differential Geometry; Arc-Length, Curvature, Torsion; First Fundamental Form; Gauss Map; Principal Curvatures and Gaussian Curvature; Mathematics
Downloads: 5
[texts]Input Shaping to Reduce Solar Array Structural Vibrations - Doherty, Michael J.
Structural vibrations induced by actuators can be minimized using input shaping. Input shaping is a feedforward method in which actuator commands are convolved with shaping functions to yield a shaped set of commands. These commands are designed to perform the maneuver while minimizing the residual structural vibration. In this report, input shaping is extended to stepper motor actuators. As a demonstration, an input-shaping technique based on pole-zero cancellation was used to modify the Solar ...
Keywords: BOUNDARY VALUE PROBLEMS; STRUCTURAL ANALYSIS; CURVATURE; SHELLS (STRUCTURAL FORMS); CONES; JUNCTIONS
Downloads: 117
[texts]Active Control of Separation from the Slat Shoulder of a Supercritical Airfoil - Pack, LaTunia G.
Active flow control in the form of zero-mass-flux excitation was applied at the slat shoulder of a simplified high-lift airfoil to delay flow separation. The NASA Energy Efficient Transport (EET) supercritical airfoil was equipped with a 15% chord simply hinged leading edge slat and a 25% chord simply hinged trailing edge flap. The cruise configuration data was successfully reproduced, repeating previous experiments...
Keywords: THREE DIMENSIONAL MODELS; FLUID JETS; JET MIXING FLOW; MATHEMATICAL MODELS; WALL JETS; CURVATURE
Downloads: 57
[texts]An alternative option to the dual-probe out-of-ecliptic mission via Jupiter swingby - Colombo, G.
The possibility of having a high-inclination out-of-the-ecliptic probe complemented by a second probe going from Jupiter to the sun along a rectilinear path (at least for the segment from 0.3 a.u. inward to the sun) is theoretically examined. Orbit calculations of spacecraft trajectories are included.
Keywords: APPROXIMATION; CAMBER; CURVATURE; LIFT DEVICES; LINES (GEOMETRY); AIRFOIL PROFILES; DIFFERENTIAL EQUATIONS; STRUCTURAL DESIGN CRITERIA
Downloads: 62
[texts]Perspectives on the Future of CFD - Kwak, Docha
This viewgraph presentation gives an overview of the future of computational fluid dynamics (CFD), which in the past has pioneered the field of flow simulation. Over time CFD has progressed as computing power. Numerical methods have been advanced as CPU and memory capacity increases. Complex configurations are routinely computed now and direct numerical simulations (DNS) and large eddy simulations (LES) are used to study turbulence...
Keywords: FULLERENES; NANOTUBES; SURFACE PROPERTIES; CURVATURE; REACTIVITY; CHEMICAL REACTIONS; BINDING ENERGY; CARBON ISOTOPES; GRAPHITE
Downloads: 106
[texts]Reduction of stress concentration in a plate of unlimited dimensions with angular notches - Chernyavskiy, D. L
Reduction of stress concentration in plate of unlimited dimensions with angular notches
Keywords: CURVATURE; NOTCHES; PLATES; REDUCTION; STRESS CONCENTRATION; NOTCH; PLATE; REDUCTION; STRESS CONCENTRATION
Downloads: 66
[texts]Note on the calculation of resistance and flexure of solid structural parts with single and double curvature, with consideration of the various forces acting on the parts in all directions (memoire sur le calcul de la resistance et de la flexion des - Saint-Venant, B. D
Single and double curvature solid structure resistance, and flexure and equilibrium equations for external and internal forces
Keywords: CURVATURE; EQUILIBRIUM EQUATIONS; FLEXING; RESISTANCE; STRUCTURAL STRAIN; EQUILIBRIUM; FLEXURE; RESISTANCE; STRUCTURAL STRAIN
Downloads: 56
[audio]Joe Mckie Talking to J. H. Mewett - Joe Mckie
A conversation between Joe Mckie and J. H. Mewett, the retired Technical Director of Sir Howard Grubb Parsons Ltd, wherein they discuss the fabrication of large format telescope mirrors. Recorded some time in 1977. This is the raw and unedited version of the file, copied directly from analogue cassette by DH, June 2009.
Keywords: telescope; optics; mirrors; polishing; figuring; grinding; lens; curvature; cassegrain; dall-kirkham; paraboloid; spherical
Downloads: 32
[audio]JoeMckieTalkingToDrDavidBrown - Joe Mckie
A recording of a conversation between Joe Mckie and Dr. David Brown, technical Director of Sir Howard Grubb Parsons Ltd, wherein they discuss issues relating to the fabrication of large telescope mirrors. This is the raw, unedited version of the file, copied from C90 cassette by DH, June 2009.
Keywords: telescope; optics; mirrors; polishing; figuring; grinding; lens; curvature; cassegrain; dall-kirkham; paraboloid; spherical
Downloads: 33
[texts]Smoke-Point Properties of Nonbuoyant Round Laminar Jet Diffusion Flames - Urban, D. L.
The laminar smoke-point properties of nonbuoyant round laminar jet diffusion flames were studied emphasizing results from long duration (100-230 s) experiments at microgravity carried -out on- orbit in the Space Shuttle Columbia. Experimental conditions included ethylene-and propane-fueled flames burning in still air at an ambient temperature of 300 K, initial jet exit diameters of 1.6 and 2.7 mm, jet exit velocities of 170-1630 mm/s, jet exit Reynolds numbers of 46-172, characteristic flame res...
Keywords: CODING; HEAT PIPES; CONDUCTIVE HEAT TRANSFER; MANUALS; STEADY STATE; SODIUM; PIPES (TUBES); LITHIUM; CURVATURE
Downloads: 72
[texts]Bell-Curve Genetic Algorithm for Mixed Continuous and Discrete Optimization Problems - Kincaid, Rex K.
In this manuscript we have examined an extension of BCB that encompasses a mix of continuous and quasi-discrete, as well as truly-discrete applications. FVe began by testing two refinements to the discrete version of BCB. The testing of midpoint versus fitness (Tables 1 and 2) proved inconclusive. The testing of discrete normal tails versus standard mutation showed was conclusive and demonstrated that the discrete normal tails are better...
Keywords: BUCKLING; CURVATURE; ANISOTROPIC PLATES; THERMAL EXPANSION; ELASTIC PROPERTIES; LAMINATES; LOADS (FORCES); CONTRACTION; MEMBRANE STRUCTURES; CRITICAL TEMPERATURE
Downloads: 72
[texts]NASA Patent Abstracts Bibliography: A Continuing Bibliography - NON
This report lists reports, articles and other documents recently announced in the NASA STI Database. Several thousand inventions result each year from the aeronautical and space research supported by the National Aeronautics and Space Administration. The inventions having important use in government programs or significant commercial potential are usually patented by NASA. These inventions cover practically all fields of technology and include many that have useful and valuable commercial applic...
Keywords: METEOROIDS; CURVATURE; GLUES; HIGH RESOLUTION; IMPINGEMENT; LUMINOSITY; COLLISIONS; FRAGMENTS; MOLECULES; WAKES; STORMS; ROTATION; NARROWBAND; ABLATION
Downloads: 100
[texts]Known TCP Implementation Problems - Allman, Mark
This memo catalogs a number of known TCP implementation problems. The goal in doing so is to improve conditions in the existing Internet by enhancing the quality of current TCP/IP implementations. It is hoped that both performance and correctness issues can be resolved by making implementors aware of the problems and their solutions. In the long term, it is hoped that this will provide a reduction in unnecessary traffic on the network, the rate of connection failures due to protocol errors, and ...
Keywords: PREMIXED FLAMES; STRAIN RATE; FLOW DISTRIBUTION; FLAME PROPAGATION; TURBULENT FLOW; STATIC MODELS; CURVATURE; TURBULENCE
Downloads: 58
[texts]Adaptive Load-Balancing Algorithms Using Symmetric Broadcast Networks - Das, Sajal K.
In a distributed-computing environment, it is important to ensure that the processor workloads are adequately balanced. Among numerous load-balancing algorithms, a unique approach due to Dam and Prasad defines a symmetric broadcast network (SBN) that provides a robust communication pattern among the processors in a topology-independent manner. In this paper, we propose and analyze three novel SBN-based load-balancing algorithms, and implement them on an SP2...
Keywords: FLUID MECHANICS; LEADING EDGES; AIRFOILS; SEPARATED FLOW; CURVATURE; VORTICITY; DEFORMATION; ANGLE OF ATTACK; SUCTION
Downloads: 79
[texts]Tensor Calculus - Barry Spain
Barry Spain Tensor Calculus Oliver & Boyd 1960 Acrobat 7 Pdf 15.3 Mb. Scanned by artmisa using Canon DR2580C + flatbed option
Keywords: Mathematics; Tensor Algebra; Covariant Differentiation; Curvature Tensor; Geodesics; Cartesian Tensor; Differential Geometry; Relativity
Downloads: 994
[texts]Riemannian Geometry - Luther Pfahler Eisenhart
Luther Pfahler Eisenhart Riemannian Geometry Princeton University Press 1968 ( 1925 ) Acrobat 7 Pdf 10.6 Mb. Scanned by artmisa using Canon DR2580C + flatbed option
Keywords: Mathematics; Tensor Analysis; Metric; Sub Space; Killing; Weierstrass; Curvature; Geodesic; Gauss; Ricci Tensor
Downloads: 1,057
[texts]Curve Fitting with Clothoidal Splines (Volume 87) - Stoer, J.
Journal of Research of the National Bureau of Standards
Keywords: approximation; clothoids; computer-aided design; Cornu-spirals; curvature; curve fitting; Fresnel-integrals; interpolation; splines
Downloads: 174
[texts]Aerothermodynamic Measurement and Prediction for Modified Orbiter at Mach 6 and 10 - Micol, John R
Detailed heat-transfer rate distributions measured laterally over the windward surface of an orbiter-like configuration using thin-film resistance heat-transfer gauges and globally using the newly developed relative intensity, two-color thermographic phosphor technique are presented for Mach 6 and 10 in air. The angle of attack was varied from 0 to 40 deg, and the freestream Reynolds number based on the model length was varied from 4 x 10(exp 5) to 6 x 10(exp 6) at Mach 6, corresponding to lamin...
Keywords: CAPILLARY FLOW; DROP TOWERS; CORNERS; GRAVITATIONAL EFFECTS; FLOW CHARACTERISTICS; SURFACE PROPERTIES; CURVATURE; INERTIA; SPREADING
Downloads: 112
[texts]TEN EUROPEAN COUNTRIES BUILD THE LAUNCHER ARIANE - LANGEREUX, P
SCHEDULED FOR COMPLETION IN 1980, THE ARIANE LAUNCHER WILL BE THE FIRST EUROPEAN ROCKET LAUNCHED USING A CRYOGENIC STAGE POWERED BY LIQUID HYDROGEN AND OXYGEN. THE MAIN TECHNICAL SPECIFICATIONS FOR THE LAUNCHER'S THREE STAGES ARE GIVEN, WITH A DESCRIPTION OF ITS FLIGHT CHARACTERISTICS. ECONOMIC INFORMATION ON ITS MANUFACTURE INCLUDES A LIST OF THE CONTRACTORS INVOLVED AND THEIR ASSIGNED TASKS. THE ARIANE WILL ENTER SERIES PRODUCTION IN THE 1980'S TO MEET A PROJECTED EUROPEAN DEMAND FOR 35 TO 50 ...
Keywords: FLIGHT CONTROL; FLIGHT PATHS; LANDING AIDS; MICROWAVE LANDING SYSTEMS; AIRCRAFT GUIDANCE; CURVATURE; FLIGHT SAFETY; FLIGHT TEST INSTRUMENTS
Downloads: 82
[texts]THE COMPOSITION AND PRESSURES OF GASES IN OCCLUSIONS OF CERTAIN TEKTITES AND SILICA GLASSES - DOLGOV, Y. A.
A STUDY OF TEKTITE, EXAMINING THE COMPOSITION AND PRESSURE OF GASES IN OCCLUSIONS OF BEDIASITE, DARWINIAN, AND LIBYAN GLASSES IS PRESENTED. CONCLUSION AS TO THE ORIGIN OF THE GASES IS BASED ON THE DIFFERING COMPOSITIONS OF THE GASES AND BASE MINERALS, ON THE EVIDENT VISCOSITY OF THE MELT OR RE-MELT STAGES, AND ON THE PRESSURE OF THE GASES IN THE OCCLUSIONS.
Keywords: EARTH GRAVITATION; PERTURBATION THEORY; GEODESY; GRADIENTS; GRAVIMETRY; GRAVITY ANOMALIES; BOUNDARY CONDITIONS; BOUNDARY VALUE PROBLEMS; CURVATURE; INTEGRAL EQUATIONS
Downloads: 93
[texts]Introduction to the Theory of Relativity: Part 3 - Patrick Bruskiewich
Introduction to the Theory of Relativity by Peter Bergmann Part 3: Chapter 10 - 13 Prentice-Hall, New York 1948
Keywords: Bergmann; Introduction to the Theory of Relativity; Principle of Equivalence; Riemann-Christoffel Curvature Tensor; Field Equations; Schwarzchild solution; Experimental Tests
Downloads: 198
[texts]Planck data, spinorial space-time and asymptotic Universe - Luis Gonzalez-Mestres
The Planck collaboration reports an age of the Universe t close to 13.82 Gyr and a present ratio H between relative speeds and distances at cosmic scale around 67.8 km/s/Mpc. The product of these two measured quantities is then slightly below 1 (about 0.96), while it can be exactly 1 in the absence of matter and cosmological constant in suitable patterns. An example is the cosmology based on a spinorial space-time we have considered in previous papers, where such an expansion law is of purely ge...
Keywords: Cosmology; pre-Big Bang; spinorial space-time; space curvature; expansion of the Universe; dark matter; dark energy; Friedmann equations
Downloads: 88
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